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GeForce GTS 150 vs Radeon HD 3470 256MB

Intro

The GeForce GTS 150 has a core clock speed of 740 MHz and a GDDR3 memory frequency of 500 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is made up of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 3470 256MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 memory is set to run at a frequency of 950 MHz on this particular model. It features 40(8x5) SPUs as well as 4 TAUs and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTS 150 should theoretically be a bit better than the Radeon HD 3470 256MB in general. (explain)

GeForce GTS 150 32000 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 1600 (5%)

Texel Rate

The GeForce GTS 150 is a lot (about 1380%) faster with regards to anisotropic filtering than the Radeon HD 3470 256MB. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 44160 (1380%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 150 is the winner, by a large margin. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 8640 (270%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTS 150

Amazon.com

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Radeon HD 3470 256MB

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTS 150 Radeon HD 3470 256MB
Manufacturer nVidia AMD
Year March 10, 2009 2008
Code Name G92b RV620 PRO
Memory 1024 MB 256 MB
Core Speed 740 MHz 800 MHz
Memory Speed 1000 MHz 1900 MHz
Power (Max TDP) 141 watts (Unknown) watts
Bandwidth 32000 MB/sec 30400 MB/sec
Texel Rate 47360 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 128 40(8x5)
Texture Mapping Units 64 4
Render Output Units 16 4
Bus Type GDDR3 DDR2
Bus Width 256-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTS 150

Amazon.com

Check prices at:

Radeon HD 3470 256MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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